Difference between revisions of "Filter Media Additives for Phosphorus Removal"

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<p>A number of granular amendments have been demonstrated to improve nutrient removal from discharge water in BMPs such as [[bioretention cells]], [[absorbent landscapes]], [[sand filters]] or [[green roofs]]. </p>
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A number of granular amendments have been demonstrated to improve nutrient removal from discharge water in BMPs such as [[bioretention cells]], [[absorbent landscapes]], [[sand filters]] or [[green roofs]].  
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<p>There are two primary processes involved, precipitation and adsorption. Both mechanisms are ultimately finite, but have been shown in come cases to make significant improvements on the discharged water quality over several years. </p>
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There are two primary processes involved, precipitation and adsorption. Both mechanisms are ultimately finite, but have been shown in come cases to make significant improvements on the discharged water quality over several years.
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<table class = "table table-striped table-responsive">
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{|class="wikitable"
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<caption><strong>Soil Additives</strong></caption>
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|+ Soil Additives
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<tr class ='success'><th>Material</th><th>Benefits</th><th>Potential concerns</th></tr>
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<tr><td>[[Biochar]]</td><td>-</td><td>Currently expensive<br>Energy intensive to produce</td></tr>
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!style="background: darkcyan; color: white"|Material
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<tr><td>[[Bold and Gold]]<sup>TM</sup><td>Total Phosphorus removal upto 71%<ref>Hood A, Chopra M, Wanielista M. Assessment of Biosorption Activated Media Under Roadside Swales for the Removal of Phosphorus from Stormwater. Water. 2013;5(1):53-66. doi:10.3390/w5010053.</ref></td><td>[http://boldandgold.com/index.html| Proprietary]</td></tr>
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!style="background: darkcyan; color: white"|Benefits
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<tr><td>[[Iron filings (ZVI)]]</td><td>Proven phosphorus retention</td><td>May harm plants<ref>Logsdon SD, Sauer PA. Iron Filings Cement Engineered Soil Mix. Agron J. 2016;108(4):1753. doi:10.2134/agronj2015.0427.</ref></td></tr>
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!style="background: darkcyan; color: white"|Potential concerns
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<tr><td>[[Red sand]]</td><td>Proven phosphorus retention</td><td>-</td></tr>
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<tr><td>[[Sorptive media]]<sup>TM</sup></td><td>Proven phosphorus retention</td><td>[http://www.imbriumsystems.com/stormwater-treatment-solutions/sorbtive-media| Proprietary]</td></tr>
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![[Biochar]]
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<tr><td>[[Water treatment residuals]]</td><td>Waste product reuse</td><td>Quality</td></tr>
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|?||Currently expensive<br>Energy intensive to produce
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</table>
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|-
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----
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![[Bold and Gold]]<sup>TM</sup>
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|Documented Phosphorus removal upto 71%<ref>Hood A, Chopra M, Wanielista M. Assessment of Biosorption Activated Media Under Roadside Swales for the Removal of Phosphorus from Stormwater. Water. 2013;5(1):53-66. doi:10.3390/w5010053.</ref></td><td>[http://boldandgold.com/index.html|Proprietary]
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|-
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![[Iron filings (ZVI)]]
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|Proven phosphorus retention||May harm plants<ref>Logsdon SD, Sauer PA. Iron Filings Cement Engineered Soil Mix. Agron J. 2016;108(4):1753. doi:10.2134/agronj2015.0427.</ref>
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|?
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![[Red sand]]
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|Proven phosphorus retention||?
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|-
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![[Sorptive media]]<sup>TM</sup>||Documented phosphorus retention||[http://www.imbriumsystems.com/stormwater-treatment-solutions/sorbtive-media| Proprietary]
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|-
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![[Water treatment residuals]]
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|Waste product reuse||Quality control
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==References==
 
<em><references/></em>
 
<em><references/></em>
 
[[category: materials]]
 
[[category: materials]]

Revision as of 02:44, 15 August 2017

A number of granular amendments have been demonstrated to improve nutrient removal from discharge water in BMPs such as bioretention cells, absorbent landscapes, sand filters or green roofs. There are two primary processes involved, precipitation and adsorption. Both mechanisms are ultimately finite, but have been shown in come cases to make significant improvements on the discharged water quality over several years.

Soil Additives
Material Benefits Potential concerns
Biochar ? Currently expensive
Energy intensive to produce
Bold and GoldTM Proprietary]
Iron filings (ZVI) Proven phosphorus retention May harm plants[2] ? Red sand Proven phosphorus retention ?
Sorptive mediaTM Documented phosphorus retention Proprietary]
Water treatment residuals Waste product reuse Quality control

References[edit]

  1. ↑ Hood A, Chopra M, Wanielista M. Assessment of Biosorption Activated Media Under Roadside Swales for the Removal of Phosphorus from Stormwater. Water. 2013;5(1):53-66. doi:10.3390/w5010053.
  2. ↑ Logsdon SD, Sauer PA. Iron Filings Cement Engineered Soil Mix. Agron J. 2016;108(4):1753. doi:10.2134/agronj2015.0427.

Gravel, or crushed stone of various size gradations (i.e., diameter), used in construction; void forming material used as bedding and runoff storage reservoirs and underdrains in stormwater infiltration practices.

Any form of rain or snow.

The attachment of gas, vapour or dissolved matter onto the surface of solid materials.

A shallow constructed channel, often grass-lined, which is used as an alternative to curb and channel, or as a pretreatment to other measures. Swales are generally characterized by a broad top width to depth ratio and gentle grades.

Surface runoff from at-grade surfaces, resulting from rain or snowmelt events.

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